Mednafen is a multi-system emulator.

The Jolly Good API port is designed for use with content for:
  Atari Lynx
  Nintendo Virtual Boy
  NEC PC Engine/TurboGrafx-16
  NEC PC Engine CD/TurboDuo
  NEC SuperGrafx
  Sony PlayStation
  Sega Saturn
  SNK Neo Geo Pocket Color
  Bandai WonderSwan/Color

Source for the emulator core is unmodified from upstream sources.
